Because the full manual contains hundreds of pages of proprietary schematics and diagrams, I cannot reproduce the document verbatim. However, I have compiled the necessary for servicing this radio.
: The RF power amplifier (PA) module is the primary failure vector during prolonged duty cycles or high VSWR (mismatched antennas). motorola gm3688 service manual top
: Inspect the PIN diode antenna switch circuit to ensure power is successfully routed outward rather than reflecting into the receiver frontend components. 5. Software Alignment Tools Because the full manual contains hundreds of pages
: VHF (136–174 MHz) and UHF (350–527 MHz). motorola gm3688 service manual top